... He made observations of a supernova (literally: nova= "new star") in 1572 (we now know that a supernova is an exploding star, not a new star). ... Brahe's meticulous observations showed that the supernova did not change positions with respect to the other stars (no parallax). ... This was early evidence against the immutable nature of the heavens, although Brahe did not interpret the absence of parallax for stars correctly, as we discuss below. Brahe made careful observations of a comet in 1577. ...

... We propose that the bimodal nature of the kick velocity distribu­ tion of radio pulsars is connected to the dichotomy between hadronic stars (i.e. neutron stars with no quark matter content) and quark stars. ... Here we propose a scenario in which the low­velocity part of the distribution is connected with normal (hadronic) compact stars, and high­velocity part is formed by objects with some amount of quark matter inside (hybrid or strange stars). ...

. english || русский . Main . Location . Telescope . Instruments . Program . Science . Publications . Images . Photos . Links . The following focal instruments are currently available at the telescope: . CCD-photometer . TFOSC -- medium and low resolution spectrometer . ( The page at TUG ) . High resolution echelle-spectrometer in coude focus . High Energy Astrophysics Department 2016 IKI RAN

... Iron abundance in the atmospheres of components of the binary system 41 Draconis . ... 5B Iron abundances, FeI and FeII lines equivalent widths, and microturbulence velocities were found for the components of a highly eccentric spectroscopic and interferometric binary system 41 Dra from high resolution spectra obtained close to the periastron. Weighted mean values of iron abundances in the atmospheres are lgN(Fe) = 7.66 ± 0.03 and lgN(Fe) = 7.72 ± 0.03 for the component a and b, correspondingly. ...

... Tonight's Sky . ... News . Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... More trouble for Hubble . ... STIS observations account for about 30 percent of all Hubble scientific programs in the current observing cycle. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Общая Астрономическая Конференция > Практика > Астрономический наблюдательно-информационный портал > Хвостатые гостьи (все о кометах) . C/2011 J2-B (LINEAR) _ CK11J02b, ранее B component - отделившаяся часть ядра кометы C/2011 J2 (LINEAR) .. ... C/2011 J2-B (LINEAR) _ CK11J02b, ранее B component - отделившаяся часть ядра кометы C/2011 J2 (LINEAR), К -1, M -1, M -2, # 220 , # 3 , # 1 , # 6 , CBET 3979 , CBET 3986 . ... Элементы орбиты C/2011 J2-B (LINEAR) _ CK11J02b (ранее B component): . ...

Date: 11/24/2014 Time:05:26 Moon Age: 1.8 Available Observing Hours: 12.9 Observer: Instrument: Operator: Cage: Lebofsky, Bell 90PrimeOne Trueblood PF hours lost to: weather: 2.0 telescope: 0.0 instrument: 0.0 computer: 0.0 Time Temp Humidity Wind Vel. Wind Dir. Seeing Open 18:30 37.8F 50% 15 N 1.9 Close 05:20 37.1F 15% 15 NE 1.8 _________________ Description ______________________ Most of the night, seeing >2", which severely limited our available targets. ...

... Polish scientists at the Space Research Centre, Polish Academy of Sciences, in Wroclaw, south-west Poland, have constructed an instrument called SphinX (short for Solar PHotometer In X-rays), which is an X-ray spectrophotometer, that will obtain spectra in the energy range 0.5--15 keV in 256 energy channels with frequency of up to 100 times a second. ... SphinX is part of a package of instruments known as TESIS (PI Prof. Sergei Kuzin, Lebedev Institute, Moscow). ... Space Research Centre, . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...

... arXiv.org . astro-ph . ... We fit the near-infrared to radio spectral energy distributions of 30 luminous and ultra-luminous infrared galaxies with pure starburst models or models that include both starburst and AGN components to determine important physical parameters for this population of objects. In particular we constrain the optical depth towards the luminosity source, the star formation rate, the star formation efficiency and the AGN fraction. ...

. --- Язык жестов - Дактильная азбука * Sign language - Dactyl alphabet --- . Выберите язык вводимого текста . Русский International Беларускi British Two Handed . Для перехода к следующей букве слова кликните мышкой по картинке после исчезновения стрелки под буквой . Введите в поле слово или отдельную букву . Дактильная азбука позволяет любое слово представить сочетанием жестов, каждый из которых обозначает соответствующую букву . Для начала демонстрации жестов нажмите кнопку . ї А. Воскресенский, 2000 .

... Recent Topics . ... MAO main . ... Open access submissions and content now available . ... Отправлено: Thu, 15 Oct 2015 07:50:43 +0300 (EEST) Тема: Open access submissions and content now available Planetary and Space Science Welcomes Open Access Submissions @media only screen and (max-device-width: 480px) { } p { margin-top: 1em; margin-bottom: 1em; margin-left: 0em; margin-right: 0em; color: #53565A; } img { display:block; -ms-interpolation-mode:bicubic; } Can't see this email properly? ...

. Comment on J1842+7946 . Comparing the brightnesses of the two main features seen in our 5 GHz image with higher frequency VLBI images available in the literature (at 8.4 GHz from the USNO database and at 15 GHz by Kellermann et al. (1998)), one can conclude that the NW component has a steeper spectrum since the SE one becomes relatively stronger as the observing frequency increases. VLBApls home page . Last modified: 16 Oct 2000

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

Cosmic Ray laboratory of . ... Neutron Monitor (Cosmic Ray Observations) . is situated in Irkutsk (Russia) . ... Height - location above sea level . ... Height: . ... For recording the CR (Cosmic Rays) neutron component at Irkutsk, . neutron monitor NM-64 is used, which is an installation with 18 two-meter proportional counters filled with BF 3 (boron trifluoride gas) in which the B 10 90 per cent of the total boron. ... The neutron monitor is located at 475m above sea level. ...

... Members . ... The ATM's of Boston was founded in 1934 by a group of persons interested in assisting others in the art of optical polishing the craft of telescope making, and to learn together about the science of astronomy and the use of astronomical instruments. ... Mr. Jones introduced the club to Dr. Harlow Shapley at Harvard College Observatory. ... Regular shop activities resumed with the help of these "professional amateurs" and the club grew to 180 members. ... Club Newsletters . ...

... Speckle polarimeter (previosly known as Multimode Fast Camera MFC) is an instrument which will implement several observational methods of astronomy in visible (BVRI bands): speckle interferometry, polarimetry, speckle polarimetry (including polaroastrometry), and fast photometry. The speckle polarimeter will be installed in one of auxiliary Nasmyth ports of 2.5 m telescope of Sternberg Astronomical Institute. Speckle interferometry. ... Tests of speckle polarimeter at 2.5 m telescope. ...

... Earth Satellites . ... Image Dan Burbank and Anton Shkaplero making music onboard the ISS (Image credit: NASA) . The first occurrence of music being made in space was during the Gemini 6 mission in 1965. ... Since then many astronauts have brought instruments into space with them, including many crews onboard the International Space Station. ... The Gemini astronauts were treated to some musical interludes during their times in space but not specifically to wake them in the morning. ...

The 2dF QSO Redshift Survey (2QZ) . ... Before jumping into all the finer details of teh survey, a brief non-astronomer's guide to redshift surveys is available. ... The primary scientific aims of the QSO survey are: (1) to obtain the primordial fluctuation power spectrum out to COBE scales, (2) to determine the rate of QSO clustering evolution in the non-linear and linear regimes and hence obtain new limits on the value of and the bias parameter, (3) to apply a powerful geometric method to measure . ...